Listen to Onion Creek flowing over limestone ledges and splashing into pools. Follow trails winding through the Hill Country woods. Explore the remains of an early Texas homestead and a very old rock shelter. Here you can camp, hike, mountain or road bike, geocache , go bouldering, and picnic. You can also fish and swim in Onion Creek. Onion Creek can flood after rainfall. Read through our swimming safety tips before you visit.
Stay at one of 81 campsites all with water and electric hookups. Or rent one of our six newly remodeled cabins. We also have a primitive youth camping area , for use by nonprofit sponsored youth groups.
Hike or bike nearly nine miles of trails. The 2. We have an all-terrain wheelchair for use in the park; email us to reserve the chair for your visit. Be safe on the trails , no matter how you access them. Bring plenty of water and travel with a partner. Go fishing in Onion or Williamson creeks. You do not need a license to fish from shore in a Texas state park.
Check out the observation deck for a great view of the Upper Falls. Explore the bat cave and learn how you can help protect our night skies. Rent the group hall for your next get-together. The hall has a full kitchen and an outdoor grill and seating area. We lead programs on birding, geocaching, atlatls and more. Check the Events page for upcoming programs. Become a Junior Ranger! Pick up a free Junior Ranger Activity Journal at headquarters or the visitor center.
Complete tasks to earn a badge. Austin has restaurants, museums, music and more, all just a short drive away. Reserve by phone : We often reach capacity, and highly recommend reservations for both camping and day use. To guarantee entry, reserve passes online or by calling the customer service center before you visit. Check our Twitter feed , Facebook posts , or call us for updates. January average low is 37 degrees. July average high is 95 degrees. Wettest month is May, with moderate humidity year-round.
